Window structure



June 29 1926.

W. J. KLEMM WINDOW STRUCTURE 7, 1925 2 Sheets-Sheet 1 Filed Oct.

June 29 1926.

w. J. E/(LEMM WINDOW STRUCTURE 1925 2 Sheets-Sheet 2 Filed Oct. 7

Patented June 29, .1926.

UNITED STATES PATENT OFFICE.

WILLIAM J. KLEMM, or CHICAGO, ILLINoIs, ASSIGNOR- T0 RUDA MANUFACTURINGCOMPANY, OF CHICAGO, ILLINoIs. A CORPORATION or ILLINOIS.

WINDOW STRUCTURE.

Application filed October 7, 1925. Serial No. 60,947,

My invention relates to window structures, particularly that type inwhich the window sash, in addition to being vertically slidable, isadapted to be swung on horizontalaxes to serve as ventilation deflectorsand also to be in better position to be washed from the inside of thebuilding.

The important object of my invention is to provide improved simple andefficient means for securely locking the sash against accidentalvertical movement when it has been swung to inclined position. Inaccordance with my invention I provide friction or" brake mechanismwhich, when the sash is vertical and parallel with the runways, isrendered inoperative so that the sash may readily slide, but which, assoon as the sash is swung to inclined position, is released and is thencontrolled by the weight ofthe sash or the counterweight to exertfriction or braking pressure-against the walls of the sash runway tosecurely lock the sash against sliding.. movement in the runway when thesash is in inclined position. The braking mechanism is released foroperation or rendered inoperative by means of cam mechanism controlledby the swinging moveent of the sash.

The above and other features of my invention are incorporated in thewindow structure shown on the drawings, in which Fig. 1 is a frontelevational view of a window frame with the sash therein;

Fig. 2 is an enlarged sectional view onplane 2-2 of Fig. 3;

Fig. 3 is a sectional view on plane 33 of Figs. 1 and 2;

Fig. 4 isa sectional view on plane 4-4 of- Fig. 3.

' sheet metal and within these weather stripping frames are the runnerstructures 17 and 18 to which the lower and upper sashes,

respectively, are attached. As shown, the:

sash stiles areof sheet metal formed to cooperate with the weather stripframes to is shown swung inwardly and the upper sash is vertical. Eachsash at each of its lower corners has a pivot pin 21 which is held andjournaled in the lower end of the respective runner frames, these runnerframes being of channel shape, as clearly shown in Fig. 2. Above eachpivot connection a supporting bar 22 is pivoted at its outer end to therespective side of the sash by means of a preferably detachable pivotpin or other suitable device 23. At its inner end each bar is pivoted toa pin 24 which extends into the respective runner frame through alongitudinally extending slot 25 and secured to a cam plate 26. The camplate is of a width to fit between the side walls of the runner frameand at its upper end has the inclined cam or wedge surface 27. With thisarrangement, as the sash is swung, the arms or bars 22 will shift thecam plates vertically in the runner frames. In each runner frame abovethe slot 25'therein is a brake shoe plate 28 havin the deflection 29forming a brake shoe. or passing through the notch or opening 30 in theadjacent side wall of the runner frame to exert friction against theadjacent wall of the runner receiving channel 13 and 14 to thus brake orlook vertical movement of therunner frame in the channel. The brake shoeplate is pivoted by a pin or rivet 31to the web of the runner frame sothat as the plate revolves around the pivot the brake shoe extensionwill be withdrawn from or projected through the I opening 30. At oneside of the pivot 31 a link 32 is pivotedto thebrake shoe plate,

the link serving as a fastening for'the chain or chord which travelsover the respective I point, may rest so away from the the window frameso that with the sash supported outwardly through "the opening 30,andtherefore when a sash hangs against the pull of'the sash weights, thetendency will be for the brake shoe plates to be swung mto brakingposition. The lower rear edge of the brake shoe plate forms a camsurface 33 against which engages the cam or wedging surface 27 of thecam plate which is shifted by the swinging movement of the sash. As thesash is swung into its vertical position, the cam plates at the oppositesides thereof come into camming or wedging engagement with thebrake-shoe plates and these plates are then swung in direction to bringin their brake shoes through the openings 30 and window frame surface sothat the sash with its runner frame may then be readily verticallyshifted in the windowframe. been swung sufficientlyto disengage its camplate from the brake shoe plates, then the pull of the chords or chainson these brake shoe plates will cause them braking or interlockingengagement with the runner frames thereon will be locked againstvertical movement in the window frame. Thus braking-or locking mechanismwhich is normally inoperative is released for operation when a sash isswung to inclined position. I

After the lower sash has been raised a distance to clear the weatherridge 34 on the sill 10, and the upper sash has been dropped a distanceto clear the channels in the head 11, either or both of the sashes'maybe swung inwardly, in which position they are readily accessible fromthe inside of the building for Washing and cleaning. The length of thebars22 and the extent of the slots 25 determines the limit of swing ofthe sash. In the arrangement shown, the sash may be swung to positionsat right angles with the window frame. It may be desirable to hold oneofthe sashes, preferably the lower sash,-

in only'slightly inclined position to direct mcoming ventilating airupwardly into the room and prevent direct blowing into the room oftheair. I therefore provide supporting pins or lugs 35 on'the oppositesides of the window frame against which the lower sash, a short distanceabove its pivot that the sash will be held in only slightly inclinedposition, when the sash is raised only a short distance vertically. Byraising the sash higher, its inclination can beincreased, and as soon asthe lugs 35 are cleared, the sash can be swung into horizontal position.In Fig. 3 full lines show the lower sash in horizontal position'anddotted linesv show it in slightly inclinae5d position and restingagainst the ugs As' before stated, the connection between the sash andthe bars 22 is preferably de- 3 and 4. The webs of the However, as soonas a sash hasto swing intotachable. The connection of the pivot pin 21with the lower end of the runner frame is also preferably detachable inorder that the sash may be readily installed and also that they may bereadily removed for repair purposes. The pivot connection between thesash and the runner frame is shown in Figs. runner bars have each alongitudinal notch 36 extending from the lower edge thereof, and intothis notch the respective pivot pin 21"is inserted. A plate 37 having alongitudinal slot 38 is then inserted between the side walls of therunner frame with the slot end abutting against the pin so as to confinethe pin between the end of the notch 36 and of'the slot 38. The plate 37is held in place by a nut 39- which extends between the side walls oftherunner frame and receives a screw 40 extending through the web of therunner frame, the inner end fthe plate 37 having the flanges 41 whichabut againstthe upper edges of the nut and so look the plate 37 inlooking position. When it is desired to removethe sash from the. windowframe, the screws 40' are withdrawn, whereafter the nut can be removedand the plate 37 withdrawn so that the'sash'pivot pins can thendisengaged fromthe notches 36. Then when the bars 22 are detached fromthe sash, the sash will be free to be removed. The sash can as readilybe inserted into the window frame.

Along the sides of the lower sash at its inner side the stiles areoffset, as indicated at 42, to leave space 43 between the sash andtherespective runner frame for the accommodation of 'the supporting bars22. y

The upper sash has similar offsets 44 to leave the spaces 45 for thesupporting bars 22 for such sash. On the outer side, the

vertical stiles of the lower sash have the vertical grooves 46 forreceiving the inner edges of the weather strip structures 16. The outersash has The inner frame. end 50 of the weather strip structure 15 isengaged by the offsetparts 42 of the inner sash, while the intermediatesections 51 of the weather strip structure 16 engage with the offsetportions 4401' the upper sash. These engagements of the Weatherstripstructures withthe sash will not interferewith the swinging move: mentof the sash. lVhen the sashes are in verticalposition, thisweather-stripping engagement will seeurelyseal the space be tween thesash and the runner frames.

I thus provide a window structure in which the sash can be readilyraised and lowered, and readily swung inwardly to inclined position. Thelooking or braking mechanism for locking the sash structures againstvertical movement when inclined, are equally efiicient for any angle ofincli-- nation of the sash.

similar grooves 47 for-re .ceiving the outer edges of the weather striptil 4 I do not desire to be limited to the exact construction,arrangement and operation shown and described, as modifications can bemade which will still come within the scope of the invention.

I claim 1. In a window structure, the combination of a window, framevhaving upright side channels, runners slidable in said channels, awindow sash pivoted to said runners for swinging movement thereon, brakeshoe structures on said runners, window weights and chords thereforconnected with said brake shoe structures and tending to move saidstructures into frictional engagement with the window frame whereby toprevent sliding movement of said runners, and

means controlled by the swinging movement of said sash for preventingoperation of said brake shoe structures when said sash is in closedposition and for releasing said structure for operation when the sash isswung to open position.

2. A window structure comprising a window frame having upright sidechanne1s,.

runners slidable in said channels, a window sash pivoted to said runnersfor swinging movement relative thereto, pivoted locking members in saidrunners, window weights and chords therefor connected with said lockingmembers and adapted to swing them i into locking engagement with thewindow frame to thereby prevent sliding movement of said runners in saidchannels, and means controlled upon swinging movement of said sash forpreventing operation ofsaid locking members when said sash is swung toclosed position and for permitting operation of said members when saidsash is swung to open position.

, 3. In a window structure, the combination of a window frame havingupright side channels, runners slidable in said channels,

a window sash pivoted to said runners for swinging movement.interlocking mechanism for preventing sliding movement of said runnersin.- said frame channels, window weights, chords extending from saidweights and connected with said interlocking, mechanism and tending tocause operation there of, and means controlled upon swinging movement ofsaid sash for rendering said interlocking mechanism inoperative when thesashis swung to closed position and for releasing it for operation whenthe sash is swung into open position.

4. In a window structure, the combination of a window frame having sidechannels. runners slidable in said channels, a window sash pivoted tosaid runners for swinging movement thereon, locking mechanism carried bysaid runners for cooperating with the window frame to prevent slidingmovement of said runners, window weights. chords extending from saidweights and connecting with said locking mechanism, the pull of saidchords on said locking mechanism tending to move said locking mechanismto operative position, and a cam member slidable within said runners andcontrolled by the swinging movement of said sash, said cam member beingdisplaced from said locking mechanism when said sash is swung to openposition whereby said locking mechanism may thenbecome operative to locksaid runners against sliding movement, and said cam members beingbrought into cooperation with said locking mechanism to shift saidlocking mechanism to inoperative position when said sash is swung intoclosed position.

5. In a window structure,'the combination of 'a window frame havingupright side channels, running slidable in said channels, a window'sashpivoted to said runners for swinging movement, locking mechanism withinsaid runners for cooperating with the window frame to lock said runnersagainst sliding movement, means tending to move said locking mechanisminto operative position, controlling members shiftable in said .runners,connections between said slnftable members and said sash for causingshifting movement of said members when said sash is swung, said shiftingmembers cooperating with said locking mechanism to make it inoperativewhen said sash is swung to closed position, and releasing said lockingmechanism to permit operation thereof when said, sash is swung to openposition.

6. In a window structure, the combination of a window frame havingupright side channels. runners slidable in said channels, a sash pivotedto said runners for swinging movement. locking mechanism, means tendingto actuate said locking mechanism to lock said runners to said frame toprevent sliding movement of said runners, cam members within saidrunners, said runners having slots extending longitudinally, barspivoted to said sash and connected with said cam members through saidslots whereby swinging movement of said sash will cause longitudinalmovement of said cam members in said runners, said cam members havingcamming engagement with saidlocking mechanism'to render said lockingmechanism inoperative when said sash is swung to closed position andsaid cam members being released from said locking mechanism to permitoperation thereof when said sash 1s swung to inclined position.

7 .In a window structure, the combination of a window frame having sidegrooves, runners slidable in said grooves, a window sash pivoted to saidrunners for swinging movement thereon, said runners having sideopenings, levers pivoted to said runners and having brake shoeextensions adjacent to said openings, means tending to swing said leversto project said brake shoe extensions through said openings intofrictional engagement with the window frame to thereby lock said runnersagainst sliding movement, and means controlled when said window sash isswung to swing said levers to withdraw their brake shoe extensions fromthe window frame when said sash is swung to closed position and torelease-said levers for operation when the sash is swung into openposition.

8. In a window structure, the combination of a window frame having sidechannels, runners slidable in 'saidchannels, a window sash, pivot pinsextending from said sash, said runners having each a slot at its lowerend, said pivot pins being received in said slots to thereby pivot saidsash for swinging movement relative to said runners, and de-' tachablemeans for locking said pins in said slots.

9. In a window structure, the combination of a window frame-having sidechannels, runners slidable in said channels, a window sash, pivotpinsextending from said sash, saidrunners having each a slot at its lowerend, said pivot pins being received in said slots to thereby pivot saidsash for swinging movement relative to said runners, a locking plate foreach runner having a slot for receiving the respective pin and forcooperating with the slot to form a bearing for said pin, and means forsecuring said plate in looking position;

In witness whereof, I hereunto subscribe my name this 30th day ofSeptember, 1925.

WILLIAM J. KLEMM.

